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![Greg Kroah-Hartman](/assets/img/avatar_default.png)
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
378 lines
10 KiB
C
378 lines
10 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __LINUX_OMAP_DMA_H
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#define __LINUX_OMAP_DMA_H
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#include <linux/omap-dmaengine.h>
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/*
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* Legacy OMAP DMA handling defines and functions
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*
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* NOTE: Do not use these any longer.
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*
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* Use the generic dmaengine functions as defined in
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* include/linux/dmaengine.h.
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*
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* Copyright (C) 2003 Nokia Corporation
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* Author: Juha Yrjölä <juha.yrjola@nokia.com>
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*
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*/
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#include <linux/platform_device.h>
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#define INT_DMA_LCD (NR_IRQS_LEGACY + 25)
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#define OMAP1_DMA_TOUT_IRQ (1 << 0)
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#define OMAP_DMA_DROP_IRQ (1 << 1)
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#define OMAP_DMA_HALF_IRQ (1 << 2)
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#define OMAP_DMA_FRAME_IRQ (1 << 3)
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#define OMAP_DMA_LAST_IRQ (1 << 4)
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#define OMAP_DMA_BLOCK_IRQ (1 << 5)
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#define OMAP1_DMA_SYNC_IRQ (1 << 6)
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#define OMAP2_DMA_PKT_IRQ (1 << 7)
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#define OMAP2_DMA_TRANS_ERR_IRQ (1 << 8)
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#define OMAP2_DMA_SECURE_ERR_IRQ (1 << 9)
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#define OMAP2_DMA_SUPERVISOR_ERR_IRQ (1 << 10)
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#define OMAP2_DMA_MISALIGNED_ERR_IRQ (1 << 11)
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#define OMAP_DMA_CCR_EN (1 << 7)
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#define OMAP_DMA_CCR_RD_ACTIVE (1 << 9)
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#define OMAP_DMA_CCR_WR_ACTIVE (1 << 10)
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#define OMAP_DMA_CCR_SEL_SRC_DST_SYNC (1 << 24)
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#define OMAP_DMA_CCR_BUFFERING_DISABLE (1 << 25)
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#define OMAP_DMA_DATA_TYPE_S8 0x00
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#define OMAP_DMA_DATA_TYPE_S16 0x01
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#define OMAP_DMA_DATA_TYPE_S32 0x02
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#define OMAP_DMA_SYNC_ELEMENT 0x00
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#define OMAP_DMA_SYNC_FRAME 0x01
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#define OMAP_DMA_SYNC_BLOCK 0x02
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#define OMAP_DMA_SYNC_PACKET 0x03
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#define OMAP_DMA_DST_SYNC_PREFETCH 0x02
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#define OMAP_DMA_SRC_SYNC 0x01
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#define OMAP_DMA_DST_SYNC 0x00
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#define OMAP_DMA_PORT_EMIFF 0x00
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#define OMAP_DMA_PORT_EMIFS 0x01
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#define OMAP_DMA_PORT_OCP_T1 0x02
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#define OMAP_DMA_PORT_TIPB 0x03
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#define OMAP_DMA_PORT_OCP_T2 0x04
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#define OMAP_DMA_PORT_MPUI 0x05
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#define OMAP_DMA_AMODE_CONSTANT 0x00
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#define OMAP_DMA_AMODE_POST_INC 0x01
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#define OMAP_DMA_AMODE_SINGLE_IDX 0x02
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#define OMAP_DMA_AMODE_DOUBLE_IDX 0x03
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#define DMA_DEFAULT_FIFO_DEPTH 0x10
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#define DMA_DEFAULT_ARB_RATE 0x01
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/* Pass THREAD_RESERVE ORed with THREAD_FIFO for tparams */
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#define DMA_THREAD_RESERVE_NORM (0x00 << 12) /* Def */
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#define DMA_THREAD_RESERVE_ONET (0x01 << 12)
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#define DMA_THREAD_RESERVE_TWOT (0x02 << 12)
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#define DMA_THREAD_RESERVE_THREET (0x03 << 12)
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#define DMA_THREAD_FIFO_NONE (0x00 << 14) /* Def */
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#define DMA_THREAD_FIFO_75 (0x01 << 14)
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#define DMA_THREAD_FIFO_25 (0x02 << 14)
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#define DMA_THREAD_FIFO_50 (0x03 << 14)
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/* DMA4_OCP_SYSCONFIG bits */
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#define DMA_SYSCONFIG_MIDLEMODE_MASK (3 << 12)
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#define DMA_SYSCONFIG_CLOCKACTIVITY_MASK (3 << 8)
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#define DMA_SYSCONFIG_EMUFREE (1 << 5)
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#define DMA_SYSCONFIG_SIDLEMODE_MASK (3 << 3)
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#define DMA_SYSCONFIG_SOFTRESET (1 << 2)
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#define DMA_SYSCONFIG_AUTOIDLE (1 << 0)
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#define DMA_SYSCONFIG_MIDLEMODE(n) ((n) << 12)
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#define DMA_SYSCONFIG_SIDLEMODE(n) ((n) << 3)
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#define DMA_IDLEMODE_SMARTIDLE 0x2
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#define DMA_IDLEMODE_NO_IDLE 0x1
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#define DMA_IDLEMODE_FORCE_IDLE 0x0
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/* Chaining modes*/
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#ifndef CONFIG_ARCH_OMAP1
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#define OMAP_DMA_STATIC_CHAIN 0x1
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#define OMAP_DMA_DYNAMIC_CHAIN 0x2
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#define OMAP_DMA_CHAIN_ACTIVE 0x1
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#define OMAP_DMA_CHAIN_INACTIVE 0x0
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#endif
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#define DMA_CH_PRIO_HIGH 0x1
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#define DMA_CH_PRIO_LOW 0x0 /* Def */
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/* Errata handling */
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#define IS_DMA_ERRATA(id) (errata & (id))
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#define SET_DMA_ERRATA(id) (errata |= (id))
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#define DMA_ERRATA_IFRAME_BUFFERING BIT(0x0)
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#define DMA_ERRATA_PARALLEL_CHANNELS BIT(0x1)
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#define DMA_ERRATA_i378 BIT(0x2)
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#define DMA_ERRATA_i541 BIT(0x3)
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#define DMA_ERRATA_i88 BIT(0x4)
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#define DMA_ERRATA_3_3 BIT(0x5)
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#define DMA_ROMCODE_BUG BIT(0x6)
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/* Attributes for OMAP DMA Contrller */
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#define DMA_LINKED_LCH BIT(0x0)
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#define GLOBAL_PRIORITY BIT(0x1)
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#define RESERVE_CHANNEL BIT(0x2)
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#define IS_CSSA_32 BIT(0x3)
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#define IS_CDSA_32 BIT(0x4)
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#define IS_RW_PRIORITY BIT(0x5)
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#define ENABLE_1510_MODE BIT(0x6)
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#define SRC_PORT BIT(0x7)
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#define DST_PORT BIT(0x8)
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#define SRC_INDEX BIT(0x9)
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#define DST_INDEX BIT(0xa)
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#define IS_BURST_ONLY4 BIT(0xb)
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#define CLEAR_CSR_ON_READ BIT(0xc)
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#define IS_WORD_16 BIT(0xd)
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#define ENABLE_16XX_MODE BIT(0xe)
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#define HS_CHANNELS_RESERVED BIT(0xf)
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#define DMA_ENGINE_HANDLE_IRQ BIT(0x10)
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/* Defines for DMA Capabilities */
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#define DMA_HAS_TRANSPARENT_CAPS (0x1 << 18)
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#define DMA_HAS_CONSTANT_FILL_CAPS (0x1 << 19)
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#define DMA_HAS_DESCRIPTOR_CAPS (0x3 << 20)
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enum omap_reg_offsets {
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GCR, GSCR, GRST1, HW_ID,
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PCH2_ID, PCH0_ID, PCH1_ID, PCHG_ID,
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PCHD_ID, CAPS_0, CAPS_1, CAPS_2,
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CAPS_3, CAPS_4, PCH2_SR, PCH0_SR,
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PCH1_SR, PCHD_SR, REVISION, IRQSTATUS_L0,
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IRQSTATUS_L1, IRQSTATUS_L2, IRQSTATUS_L3, IRQENABLE_L0,
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IRQENABLE_L1, IRQENABLE_L2, IRQENABLE_L3, SYSSTATUS,
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OCP_SYSCONFIG,
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/* omap1+ specific */
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CPC, CCR2, LCH_CTRL,
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/* Common registers for all omap's */
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CSDP, CCR, CICR, CSR,
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CEN, CFN, CSFI, CSEI,
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CSAC, CDAC, CDEI,
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CDFI, CLNK_CTRL,
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/* Channel specific registers */
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CSSA, CDSA, COLOR,
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CCEN, CCFN,
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/* omap3630 and omap4 specific */
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CDP, CNDP, CCDN,
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};
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enum omap_dma_burst_mode {
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OMAP_DMA_DATA_BURST_DIS = 0,
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OMAP_DMA_DATA_BURST_4,
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OMAP_DMA_DATA_BURST_8,
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OMAP_DMA_DATA_BURST_16,
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};
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enum end_type {
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OMAP_DMA_LITTLE_ENDIAN = 0,
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OMAP_DMA_BIG_ENDIAN
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};
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enum omap_dma_color_mode {
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OMAP_DMA_COLOR_DIS = 0,
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OMAP_DMA_CONSTANT_FILL,
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OMAP_DMA_TRANSPARENT_COPY
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};
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enum omap_dma_write_mode {
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OMAP_DMA_WRITE_NON_POSTED = 0,
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OMAP_DMA_WRITE_POSTED,
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OMAP_DMA_WRITE_LAST_NON_POSTED
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};
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enum omap_dma_channel_mode {
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OMAP_DMA_LCH_2D = 0,
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OMAP_DMA_LCH_G,
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OMAP_DMA_LCH_P,
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OMAP_DMA_LCH_PD
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};
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struct omap_dma_channel_params {
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int data_type; /* data type 8,16,32 */
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int elem_count; /* number of elements in a frame */
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int frame_count; /* number of frames in a element */
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int src_port; /* Only on OMAP1 REVISIT: Is this needed? */
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int src_amode; /* constant, post increment, indexed,
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double indexed */
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unsigned long src_start; /* source address : physical */
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int src_ei; /* source element index */
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int src_fi; /* source frame index */
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int dst_port; /* Only on OMAP1 REVISIT: Is this needed? */
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int dst_amode; /* constant, post increment, indexed,
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double indexed */
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unsigned long dst_start; /* source address : physical */
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int dst_ei; /* source element index */
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int dst_fi; /* source frame index */
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int trigger; /* trigger attached if the channel is
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synchronized */
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int sync_mode; /* sycn on element, frame , block or packet */
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int src_or_dst_synch; /* source synch(1) or destination synch(0) */
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int ie; /* interrupt enabled */
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unsigned char read_prio;/* read priority */
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unsigned char write_prio;/* write priority */
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#ifndef CONFIG_ARCH_OMAP1
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enum omap_dma_burst_mode burst_mode; /* Burst mode 4/8/16 words */
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#endif
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};
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struct omap_dma_lch {
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int next_lch;
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int dev_id;
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u16 saved_csr;
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u16 enabled_irqs;
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const char *dev_name;
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void (*callback)(int lch, u16 ch_status, void *data);
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void *data;
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long flags;
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/* required for Dynamic chaining */
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int prev_linked_ch;
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int next_linked_ch;
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int state;
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int chain_id;
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int status;
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};
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struct omap_dma_dev_attr {
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u32 dev_caps;
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u16 lch_count;
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u16 chan_count;
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};
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enum {
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OMAP_DMA_REG_NONE,
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OMAP_DMA_REG_16BIT,
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OMAP_DMA_REG_2X16BIT,
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OMAP_DMA_REG_32BIT,
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};
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struct omap_dma_reg {
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u16 offset;
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u8 stride;
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u8 type;
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};
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#define SDMA_FILTER_PARAM(hw_req) ((int[]) { (hw_req) })
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struct dma_slave_map;
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/* System DMA platform data structure */
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struct omap_system_dma_plat_info {
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const struct omap_dma_reg *reg_map;
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unsigned channel_stride;
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struct omap_dma_dev_attr *dma_attr;
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u32 errata;
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void (*show_dma_caps)(void);
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void (*clear_lch_regs)(int lch);
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void (*clear_dma)(int lch);
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void (*dma_write)(u32 val, int reg, int lch);
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u32 (*dma_read)(int reg, int lch);
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const struct dma_slave_map *slave_map;
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int slavecnt;
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};
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#ifdef CONFIG_ARCH_OMAP2PLUS
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#define dma_omap2plus() 1
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#else
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#define dma_omap2plus() 0
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#endif
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#define dma_omap1() (!dma_omap2plus())
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#define __dma_omap15xx(d) (dma_omap1() && (d)->dev_caps & ENABLE_1510_MODE)
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#define __dma_omap16xx(d) (dma_omap1() && (d)->dev_caps & ENABLE_16XX_MODE)
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#define dma_omap15xx() __dma_omap15xx(d)
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#define dma_omap16xx() __dma_omap16xx(d)
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#if defined(CONFIG_ARCH_OMAP)
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extern struct omap_system_dma_plat_info *omap_get_plat_info(void);
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extern void omap_set_dma_priority(int lch, int dst_port, int priority);
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extern int omap_request_dma(int dev_id, const char *dev_name,
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void (*callback)(int lch, u16 ch_status, void *data),
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void *data, int *dma_ch);
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extern void omap_enable_dma_irq(int ch, u16 irq_bits);
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extern void omap_disable_dma_irq(int ch, u16 irq_bits);
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extern void omap_free_dma(int ch);
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extern void omap_start_dma(int lch);
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extern void omap_stop_dma(int lch);
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extern void omap_set_dma_transfer_params(int lch, int data_type,
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int elem_count, int frame_count,
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int sync_mode,
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int dma_trigger, int src_or_dst_synch);
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extern void omap_set_dma_write_mode(int lch, enum omap_dma_write_mode mode);
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extern void omap_set_dma_channel_mode(int lch, enum omap_dma_channel_mode mode);
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extern void omap_set_dma_src_params(int lch, int src_port, int src_amode,
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unsigned long src_start,
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int src_ei, int src_fi);
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extern void omap_set_dma_src_data_pack(int lch, int enable);
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extern void omap_set_dma_src_burst_mode(int lch,
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enum omap_dma_burst_mode burst_mode);
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extern void omap_set_dma_dest_params(int lch, int dest_port, int dest_amode,
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unsigned long dest_start,
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int dst_ei, int dst_fi);
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extern void omap_set_dma_dest_data_pack(int lch, int enable);
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extern void omap_set_dma_dest_burst_mode(int lch,
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enum omap_dma_burst_mode burst_mode);
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extern void omap_set_dma_params(int lch,
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struct omap_dma_channel_params *params);
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extern void omap_dma_link_lch(int lch_head, int lch_queue);
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extern int omap_set_dma_callback(int lch,
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void (*callback)(int lch, u16 ch_status, void *data),
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void *data);
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extern dma_addr_t omap_get_dma_src_pos(int lch);
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extern dma_addr_t omap_get_dma_dst_pos(int lch);
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extern int omap_get_dma_active_status(int lch);
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extern int omap_dma_running(void);
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extern void omap_dma_set_global_params(int arb_rate, int max_fifo_depth,
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int tparams);
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void omap_dma_global_context_save(void);
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void omap_dma_global_context_restore(void);
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#if defined(CONFIG_ARCH_OMAP1) && IS_ENABLED(CONFIG_FB_OMAP)
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#include <mach/lcd_dma.h>
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#else
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static inline int omap_lcd_dma_running(void)
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{
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return 0;
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}
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#endif
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#else /* CONFIG_ARCH_OMAP */
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static inline struct omap_system_dma_plat_info *omap_get_plat_info(void)
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{
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return NULL;
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}
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static inline int omap_request_dma(int dev_id, const char *dev_name,
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void (*callback)(int lch, u16 ch_status, void *data),
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void *data, int *dma_ch)
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{
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return -ENODEV;
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}
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static inline void omap_free_dma(int ch) { }
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#endif /* CONFIG_ARCH_OMAP */
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#endif /* __LINUX_OMAP_DMA_H */
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